TW379514B - Light emitting articles with light reflecting structures - Google Patents

Abstract

Light emitting articles comprising a substrate, a light reflecting structure positioned in or on the substrate, and an organic light emitting device positioned in or on the light reflecting structure. The light emitting articles of the present invention minimize waveguiding, thus increasing efficiency, brightness and resolution.

Description

Μ B? Printed by the Consumers' Cooperative of the Central Bureau of Standards and Mobilization of the Ministry of Economic Affairs of the People's Republic of China. 发明 Description of the invention (1) Complex scope The present invention relates to organic light-emitting devices (OLED's), and in particular, it is designed to maximize the efficiency and cause Light-emitting items with minimal loss due to wave a II background electronic displays are used in devices such as televisions, computer terminals, telecommunications equipment, and many other applications. Among the types of electronic displays currently available, flat-panel display technology is quite important and has continued to develop in this area. Expectations for any display technology include the ability to provide high resolution, full color display in good light, and competitive prices. Organic light-emitting devices (OLED's) using thin-film materials that emit light when excited by an electric current have become an increasingly popular form of flat display technology. At present, the most popular organic light-emitting structure is shown in FIG. 1A, which is called a double heterostructure (DH; OL £ D). In this device, a substrate layer 10 of glass is coated with a thin layer of indium-tin-oxide (IT0) u. Then "deposit a thin (100-500 Angstrom) organic hole transport layer (HTL) 12 on the IT0 layer 11" The one deposited on the surface of HTL 12 is a thin (typically 50 Angstroms-500 Angstroms) light-emitting layer (El) 13. EL13 provides a recombination position of electrons injected from the electron transport layer 14 (ETL) with a thickness of 100-500 Angstroms and holes from HTL 12. Examples of prior art ETL, EL and HTL materials are published in U.S. Patent No. 5,294,870 ', the disclosure of which is incorporated herein by reference. EL 13 is usually doped with highly fluorescent dyes to adjust color and improve

I OLED electrical excitation light efficiency. The device shown in Fig. 1a is completed by depositing metal contacts 15, 16 and a top electrode 17. Contacts 15 and 16 are typically ------; --- 71 installed ------- ordered --- --- i (read first > 1 read back- & note (Fill in this page again)

Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Consumer Cooperatives ¾ A7 B7 V. Invention Description (2) It is made of indium or Ti / Pt / Au. The electrode 17 is usually a double layer composed of an alloy such as Mg / Ag 17 'in direct contact with the organic ETL 14 and a thick high work function metal layer 17 "such as gold (Au) or silver (Ag) on Mg / Ag. Structure. The thick metal 17 is opaque. When an appropriate bias is applied between the top electrode 17 and the contacts 15 and 16, the self-emitting layer Π emits light through the glass substrate 10. The LED device of FIG. 1A Depending on the color of the light and the device structure, it typically has a light emitting external quantum efficiency of 0.05% to 2%. Another known organic light emitting structure is called a single-heterostructure (SH; single heterostructure) as shown in Figure 1B. 〇LED. The difference between this lexical structure and the DH structure lies in the multifunctional layer 13, which is also used as el and etl. One limitation of the device of Figure 1B is that the multifunctional layer must have a good electron transport capability. Otherwise, it should be as The device shown in Figure 1A contains individual EL and ETL layers. Another known LED device is shown in Figure 1C, which illustrates a typical cross-sectional view of a single-layer (polymer) OLED. As shown, this device Glass substrate 1 comprising a thin ITO layer j. A spin coating The thin organic layer 5 of the polymer is, for example, formed on the IT0 layer 3, and it provides all the functions of the HTL, ETL, and EL layers of the device described previously. A metal electrode layer 6 is formed on the organic layer 5. This metal It is typically Mg 'Ca, or other metals with a low work function that are commonly used. Examples of multicolor electro-excitation light image display devices using organic compounds as light-emitting pixels-Examples are published in US Patent No. 5,294,87G I A plurality of light-emitting pixels containing an organic medium to emit blue light. A fluorescent medium is set between a blue LED and a substrate in a certain part of the pixels. Fluorescent 2-5: Ϊ ···-裳 i! fPlease read the notes on the back before filling in this page j

-, 1T wire wood paper size applies Chinese National Standards (CNS) (210X 297 mm) 5. Invention Description (3) Α7 Β7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs, the consumer co-operative society absorbs the light emitted by Ramba OLED, And emit red and green light in different areas of the same pixel. One disadvantage of this type of display is that the guided waves of light from one pixel to adjacent pixels through the glass substrate can cause blurring, color bleeding, lack of image resolution, and loss of guided light. This problem is schematically shown in FIG. 1D for the device shown in FIG. Α, and it is further explained in D z Garbuzov et al., “Photoluminescence Efficiency and Absorption Aluminum (Photoluminescence Efficiency and Absorption Aluminum) Tri-Quinolate (Alq3) Thin Films ", 249 Chemical JPh ^ sics Letters 433Π 996), which is incorporated herein as a reference material. Another aspect of this device is the high loss of the ITO system used as a transparent conductive layer Materials, which will cause the IT0 layer to absorb the guided light. Another problem encountered in this device and other prior art devices is the problem. The interconnecting lines of the ILED can be seen by the viewer as black lines that surround individual pixels. Increase the granularity of display and limit the resolution. SUMMARY OF THE INVENTION The present invention includes monochromatic and multi-color light-emitting items that utilize light reflecting structures to improve efficiency and reduce losses caused by other effective light-emitting guided waves. The present invention ^ Each specific example includes a substrate, a light reflection disposed in or on the substrate, and a light reflection structure and a light reflection structure. 〇Led on the structure. This light reflecting structure is characterized by the top part and the bottom part, where the top part is more than the bottom part, so that the light emitted from the 0LED is guided to the bottom part. _ In the fear sample, The luminous article of the present invention includes a plurality of picture elements, each of which has at least one light paper size in the form of an angled-was mesa (angle_WaUed mesa) -------- ^ --- ΓΊ 装 " I (please first (Read the notes on the back; 1, ear-filled clothing page)

V1T ------ line ---- ίι • — ^ n — ^ ϋ ·

• -I nI A7 A7 B7 V. Description of the invention (4 I ----- „--- Γ1 Packing .. II (Please read the precautions on the back before filling in this page) Shooting structure. Used in the present invention The high platform is in the form of a truncated pyramid, and each has a top part that is more than the bottom part, so that the light passes through the reflection: side soil, and is guided in the direction from its top to its bottom part. In one aspect, the light-emitting article of the present invention is configured to concentrate light. Each of these objects includes a transparent substrate, a light reflection layer on the substrate, a light reflection structure in the form of a wave-guiding layer on the light reflection layer, and Up to > an OLED on the wave-guiding layer. The light-reflecting layer has at least one opening. Light emitted from Oled reflects off the side wall of the wave-guiding layer and the light-reflecting layer so that it is guided through the opening in the light-reflecting layer and passes The substrate emits light. In a first specific example, the light-emitting article of the present invention includes a plurality of picture elements', each of which includes a light-emitting device in three elevated platforms disposed on a transparent substrate. Blue light transmitter, the second one of the three high platforms As a green light emitter, and the third of the three platforms is provided as a red light emitter. In this specific example, the bottom portion of each platform is next to the substrate so that the light emitted by each platform is directed toward the substrate Printed in the second specific example by the Ministry of Economic Affairs, Central Bureau of Standards and Consumer Affairs Cooperative. In the second specific example, the light-emitting article of the present invention includes a plurality of picture elements, each of which includes a light-emitting device provided in three inverted corner wall platforms, where The first of the three inverted platforms is provided as a blue light transmitter, the second of the three inverted platforms is provided as a green light transmitter, and the second of the three inverted platforms is provided as a red light transmitter. In this specific example, the top of each south platform is in close proximity to the substrate, so that the light emitted by each high platform is guided away from the substrate, so the high platform is referred to as "reverse". This reverse high platform is set

I on or in a substrate. In the third specific example, the light-emitting article of the present invention includes a plurality of picture elements. The paper scale is applicable to the Chinese National Standard (CNS) Λ4 specification (210X297 mm).

Words: The light-emitting device of the taxi 2 is installed in a single high platform or inverted high platform. The ugly :::, monitor, green and red LEDs are stacked to provide horse monitor, green or red light emitters individually or in combination. In the fourth specific example, this reference article on the evening tour of Mt. H 1, τ is not bright. The luminous article includes a light reflection layer on a transparent substrate, a light reflection layer in the form of a wave guide layer on the light reflection layer. Structure, and in the invention I π, on the skin layer (at least one OLED) This wave layer has a top surface, a bottom surface, and at least three sides, and the middle side is at a low S9G angle with respect to the substrate. , And the other sides are perpendicular to the earth material. The light emitted from the OLED is reflected to open the light reflection layer and the wave guide layer < side 1 The light emitted by this is concentrated and passed through the opening in the light reflection to emit light through the substrate. In the fifth specific example, the wave-guiding layer I of the fourth specific example has at least two sides that are at an angle lower than if9G. With respect to the substrate, and the other sides are perpendicular to the substrate. The light reflection layer has a The base material is lower than 90 °. Multiple openings under the angle of the side of the wave-guiding layer. The light emitted from the LED is therefore reflected to open the sides of the light-reflecting layer and the wave-guiding layer. The light thus emitted is concentrated and guided through Openings in the light reflecting layer to pass through the substrate Luminescence, and gather to a common focus. Brief description of the drawings Figure 1A is a cross-sectional view of a typical organic dual heterogeneous structure light-emitting device (OLED) according to the previous technology. Figure IB is a typical organic single according to the prior art-no A cross-section view of a homogeneous structure light-emitting device (LED). F 'Figure 1C is a cross-section of a known single-layer polymer le D structure according to the first technology -8- This paper size applies Chinese National Standard (CNS) A4 specification (2I0X297 (Mm) f Please read the notes on the reverse side before filling in this page)-衣 —ί —------ Printed by the Consumers ’Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ----------- A 7 -— _ B7 ~ ~~~ " '' ---------------- 5. Description of the invention (6) Sectional drawing. ‘FIG. 1D illustrates the problem of guided waves in a conventionally constructed LED structure. 2A, 2B, and 2 (: are cross-sectional views of an overall three-color pixel using a blue organic light-emitting device (OLED) and red and green low-frequency conversion phosphor layers according to a specific example of the present invention. FIG. 2D A specific example of the invention is a stacked configuration of blue, green, and red OLEDs in the form of high-level pixel elements. Fig. 3 shows a top view of a specific example of the present invention. Figs. 4A to 4D illustrate the fabrication of the first embodiment of the present invention shown in Fig. 2A. A method of a specific example. Figures 5 A to 5E illustrate a method of manufacturing a second specific example of the present invention shown in Figure 2'B. Figures 6A to 6D illustrate a third method of manufacturing the present invention shown in Figure 2D. 7A and 7B are a cross-sectional view and a top view, respectively, of a specific example of the present invention. FIG. 7C is a cross-sectional view of an inverted form of the device shown in FIG. 7A. FIGS. 8A and 8B are respectively A cross-sectional view and a top view of a specific example of the present invention. Printed by the Shellfish Consumer Cooperative of the Central Panasonic Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). Figure 9 outlines Θ > < 9 c, critical angle of internal reflection. The deformation of some LEDs that can be used is shown in the figure. ΠΑ-11B illustrates the effect of the length of the light-emitting device on the light intensity and the efficiency of the device. __________-9-This paper size applies the Chinese National Standard (CNS) Λ4 specification (210x29) ? Mm) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ7. * _____B? V. Description of Invention (7) ~ --- Detailed description The first specific example of the present invention is shown in Figure 2A. In this specific example, due to the collimating effect of the light reflecting structure in the form of a high platform structure, the guided wave is reduced and the light emission output is increased. This sight is achieved by total reflection from the corner wall of the high platform structure or by specular reflection from the metal deposited on the corner wall. The device shown in Figure 2A includes Stacked pixels, where the stack includes blue 0 1 ^ 0 layers 20 and red and / or green low-frequency variable-frequency phosphors indicated as 2 丨 and 22 respectively according to a particular stack. The substrate 37 is generally made of a transparent material such as glass, quartz, sapphire = plastic. The OLED layer is in the form of DH or SH, or a single-layer polymer-based OLED as is well known in the art. 'Device 24 is a blue emitter including a blue OLED 20 extending horizontally to the top portion of each device 27 and 28 as well. The device 27 comprises a blue OLED 20 and a green emitter of a green low-frequency conversion phosphor 22 at the bottom of the stack, wherein the phosphor 22 converts blue light from the OLED 20 into green light. The third device 28 includes a blue LED 0 and a green low-frequency conversion phosphor 22, which converts blue light from the LED 20 to red light i red low-frequency conversion phosphor 21. In this case, the red light passes through the green phosphor 22 which is transparent to the red light without being absorbed. For ease of manufacture, the green low-frequency conversion phosphor 22 is left in the device 28. Alternatively, the third device 28 includes a blue OLED 20 and a red low-frequency conversion phosphor 21 at the bottom portion of the stack, wherein the red phosphor converts blue light from OLED 20 to red light without passing through the green low-frequency conversion Phosphor layer. In yet another configuration of the third device 28, a layer of green low-direction variable frequency phosphor is set ____ -10- This paper size is applicable to the Chinese National Standard (CNS) Λ4 grid (210X 29 * 7 mm)- ---- ί --- install -------- order ------ line (please read the notes on the back first and then fill in this hundred c B7 V. Description of the invention (8) Yu Lan Between the color OLED 20 and the red low-direction variable-frequency phosphor 2. In this configuration, the 'green low-direction variable-frequency phosphor 22 will convert the blue light emitted from the OLED 20 into green light, and then the red low-directional variable-frequency phosphor 2 1 This green light is converted into red light. However, this configuration is generally not good because the efficiency of the device tends to decrease as the number of low-frequency conversion steps increases. Although the specific example shown in FIG. 2A uses Low-direction frequency conversion phosphor layer, but devices 24'27, and 28 can be replaced with blue, green, and red LEDs without using low-direction frequency conversion phosphor layers. The high platform walls of any device 24, 27, and 28 can be made arbitrary Acute angle to minimize or prevent guided waves, although it is about 35 relative to the substrate. 45 is preferred. Composition devices 24, 27 And the collimating medial layer 19 of the bottom part of 28 is at an angle, so that the general wave will be guided into the lateral pixels to cause color leakage and resolution; and the light of degree loss will be reflected through the side wall of the platform and unnecessary. The reflector 47 is derived from the substrate 37. This reflection is shown as a light beam r2, which emerges from the dielectric layer 19 through the substrate 37 and increases the beam size. The optional reflector 47 is made of, for example, aluminum, Made of silver, Mg / A1, or any other suitable material. In addition to the reflector 47, the reflector 47 can be connected to the metal layer 26 shown in FIG. 3 through the extended reflector 47. The Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Imprint (read the notes on Back 1 & then fill out this page) and use it as an interconnector. Use reflector 47 as an interconnector—a significant advantage is that this interconnector is placed next to So that it can be hidden from the viewer. Therefore, the resulting display does not have the dark lines between adjacent pixels as often seen in conventional display devices. For simplicity, in the drawings, Will be used in the present invention. Shown as a single layer "However, as is well known in the art and as explained here, such as 〇LEd -11-This paper size applies to Chinese national standards (cns, Central Standards Bureau, Ministry of Economic Affairs, Employee Consumer Cooperatives, printed A7 B7, V. Description of the invention ( 9) Not a single-layer polymer, these layers actually include multiple sub-layers, and the configuration of the sub-layers depends on whether the device is in the form of DH or SH. For example, if DH OLED is used in the present invention, Then the OLED device 20 will be composed of HTL deposited or grown in another way or deposited on the surface of the IT0 layer. The top ETL sandwiches the EL between the former and the HTL. Each HTL, ETL, ITO and organic EL layer is transparent due to its composition and minimum thickness. Each HTL may be 50-1000 Angstroms thick; each el may be 50-500 Angstroms thick; each ETL may be 50-1000 Angstroms thick; and the IT0 layer may be 1000-4000 Angstroms thick. For optimum performance and low voltage operation, it is better to keep the organic layers below the above-mentioned range. Each of the devices 24, 27, and 28 (excluding the ITO / metal layer) is preferably approximately 500 angstroms thick. Suitable examples of organic ETL, EL, and HTL materials can be found in US Patent No. 5,294,870. Formed on top of the ETL is a metal layer 26M with a low work function (preferably < 4 cV). Appropriate choices for the metal layer 26M include Mg, Mg / Ag, and the one on the top of the metal layer 26M is another conductive layer 261 suitable for forming an electrical contact. The conductive layer 261 may be made of, for example, iT0, Al, Ag, or Au. For convenience, the double-layered structure of the metal layers 26M and 261 is referred to as the metal layer 26. A joint 26T is formed on the metal layer 26 to make an electrical connection thereto, and it may be made of In, Pt 'Au, Ag, and combinations thereof, or any suitable material known in the art. If the SH OLED structure is used to provide devices 24, 27, and 28 instead of DH OLED devices, then the ETL and EL layers are single-function layers, as described in layer 13 'previously described for SH in FIG. provide. This layer 13 is a hydrogen sterilizer or other known material that can achieve the multifunctional purpose of layer 13 '. However, -12- This paper size applies the Chinese National Standard (CNS) Λ4 specification (210x297). -I -I m-—-H 1-I-'--- ·· »J_1-! *! I. I—-n ^ — l ^ i-, one UJ1 I mu 1 ^ 1 I 1-- ……-^ HK (Please read the notes on the back before filling in the ft 'end page) A7 A7 Staff of Central Bureau of Standards, Ministry of Economic Affairs Consumption Cooperative Printing V. Description of the Invention (10) A DH OLED stack is superior to SH OLED stacks in that DH LED stacks generally allow higher efficiency.

The voltage across the OLED at 24, 27, and 28 is controlled to provide the desired resulting color and brightness for a particular pixel at any time. Obviously, device 24 emits blue light, device 27 emits green light and device 28 emits red light. In addition, different combinations of the devices 24, 27, and 28 can be actuated to selectively obtain the desired light color for the individual pixel portion and the current magnitude in each device 24, 27, and 28. Devices 24, 27, and 28 can be respectively Forward biased by batteries 32, 31 and 30. In FIG. 2A, the current flows from the positive electrode of each battery 32, 31, and 30 to the cathode terminal 26D of the related device through the layers of the respective devices, and flows from the anode terminal 35T formed on the conductive layer 35 to each battery 32 '31 and 30 negative. As a result, light is emitted from the 01 ^ 0 layer in each of the devices 24, 27, and 28. The isolation layer 25 prevents a short circuit between the cathode and anode layers. When the pixels are assembled into a display, the anode and cathode connections are created at the edges of the display, for example. Each device 24, 27, and 28 may include a low-loss, high-reflectivity dielectric material between the contact 35 and the layers 21, 22, and 19, respectively, such as the layer · 6 of Ding 0 2 as needed. The layer 36 is particularly preferable when the contact 35 is made of the material IT0 which is a high loss so that the light from the monitor color OLED layer 20 can be easily guided into and absorbed by the contact 35. The reflectances of ΤΊ02 and ΐτο are approximately 2.6 and 2.2, respectively. Layer 36 thus substantially eliminates the guided waves and absorption in ITO, and the light emitted from blue OLED layer 20 is now transmitted through layer 36 or guided within layer 36 and is reflected by the side walls of the platform and the radiator 47. If necessary, similar layers can be included in the devices 24, 27, and 28 as intermediate layers to improve performance. 13- ^ t (CNS) (210 X 297 ^^ 7 (Please read the precautions on the back before filling out this page) )-Equipment. Line V. Description of the invention (11) A 7 B7 Printed as a hole injection enhancement layer by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. In the second specific example of the present invention, reverse or reverse The device ^ 2A is constructed in a manner to provide a hair from the top of the stack rather than the bottom. According to this first specific example, as shown in FIG. 2B (not scaled, " inverted, " The collimation suppresses the guided waves along the structural layer. In this specific example, since the top part of each high platform is close to the substrate, so that the light emitted by each high △ is guided away from the substrate, the high platform is called, " If: Figure 2B of the inverted high platform structure, the guided waves along the structure layer will cause the low-frequency conversion layer in one pixel to be caused by light emitted from nearby pixels. This phenomenon is called " crosstalk •• or color leakage. In the specific example shown in FIG. 2B, A layer of dielectric material, such as SiOx, SlNx, polyimide, etc., is deposited on the substrate 51 and etched to form a region 50 with a flat bottom cavity in between. The region 50 makes the via The layers of these devices form the inverted plateau of devices 241, 27, and 28. The inverted plateaus of each device 24, 27, and 28 include a reflective metal contact layer 56, an isolation layer 53, and a blue OLED layer 20, The dielectric layer 55, and the red or green phosphors 21 and 22 for the inversion south stage devices 28 'and 27', respectively. Another way is that the inversion high stage device 28 'has a blue LED layer 20 and Between the red phosphors 21, or (ii) one of the green discs on the red phosphor layer 21. The metal contact layer 56 may be made of metal, silver, jyjg / Al, etc. The metal contact layer 56 may be provided as a reflection in addition to Outside the device, it is better to use $ as the interconnect. It is better to use the metal connection and the contact layer 5 6 as the interconnector. An obvious advantage is that it is arranged below the devices 24 ', 27, and 28, so it can be used. Fangguan-14- This paper size applies Chinese National Standard (CNS) A4 specification (2IOX297 cm) ------;- -1 Install I, —— Please read the precautions on the back before filling this page)-Thread I-I In-·

• 1— I I I Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Consumers and Consumers Cooperatives Α7 Β7 Five 'Explanation (12) The viewer is hidden. The resulting display therefore does not have the dark lines between adjacent pixels as is often seen in conventional display devices. Each reversal plateau further includes a transparent contact region 52 having a thin (about 50-200 angstroms) low work function metal layer 52A and a thicker (about 50,000-4000 angstroms) IT0 coating. Compared with the first specific example, the polarities of the batteries 30, 31, and 32 are opposite. As a result, when the forward bias is used to emit light, the currents flowing through the devices 24 ', 27, and 28 are opposite to the direction of the specific example of FIG. 2A. The specific example shown in Fig. 2B can generally have a higher resolution than the specific example shown in Fig. 2A. This is because the specific example shown in FIG. 2A can cause a relatively wide light beam to be emitted from each of the devices 24, 27, and 28 due to the considerable distance between the light-emitting area and the surface of the substrate. In contrast, the light beams emitted from the respective inverted platform structures of FIG. 2B did not pass through the dielectric layer or the substrate material. As a result, when compared with the light beams emitted from the respective platform devices shown in Fig. 2A ', considerable beams are emitted from the inverted platform devices 24m, 27, and 28 of Fig. 2B. In addition to the morphology shown in FIG. 2B, the inverted high stage is formed by forming a region 50 by a single dielectric layer, and can be manufactured by forming devices 24 ', 27', and 28 'on a pattern substrate 60. Reverse the high platform, as shown in Figure 2C. The pattern substrate 60 has recesses, and each recess has a substantially flat bottom surface and inclined sidewalls. Each side wall is inclined to create an obtuse angle with the bottom surface, of which about 1j5 -145 is preferred. The depth of the recess can be quite shallow, around 1000-3000 Angstroms' and as wide as needed. For example, the pattern substrate 60 is formed by

_ I is made of the si of the cavity formed by the standard directional money carving method. In addition to the hollow structure with straight, inclined sidewalls not shown in Figures 2B and 2C, there can also be ------------- ί ------ IT ------ . ^ (Please read the notes on the back before filling this page) This paper size applies to Chinese National Standard 15- (2ί297 × 297 mm) Printed by the Consumers ’Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ---- Description of the invention (13) Examination section. For example, consider _, 5 to suggest recesses with semi-circular cross sections. In addition, it can be seen that any of the present invention is slamming, ~ 1, 1 7, 78, 例, 乏 example, or reversed platform from the top view sighed in virtually any shape, such as a shape, triangle, circle, And a corner. In Figure 2A, 2B formula 9Γ cup-, ^ + times 2 < in any specific example, there is no reflectance relative to and in the hair of the OLED # prestige, a ± ,, Αα u light-sensitive layer And continued: the smaller material between the photobody layers: j causes all photons emitted by the OLED to be absorbed by the phosphor. In this way, the efficiency with which blue M is transported into the red and green scales is increased.田 用于 夕 色 应用 #, each pixel used in the display of the present invention emits red, green and blue light simultaneously or separately. Or when used in monochrome applications, each pixel emits a single color. A specific example of the present invention shown in Fig. 2A will now be described a method of manufacturing a multi-color LED on a common substrate 37. This method is illustrated schematically in Figures 4A-4D and is not intended to be drawn to scale. The following steps can be used to make an array of multicolor organic devices: 0 A 5-10 micron transparent dielectric layer 19 is deposited on a substrate 37. The dielectric layer 19 should preferably have a reflectivity lower than or equal to that of the substrate 37. The layer 19 can be, for example, SiOx or Teflon. 2) A green phosphor layer 22 is deposited. 3) Deposit a thin etch stop dielectric layer 23, such as SiOx. 4) Deposit the red phosphor layer 21. The device looks like Figure 4A after this step.

I 5) Through reactive ion or wet, chemically etched slate photographic molding to produce a two-dimensional high platform structure as shown in Figure 4B. 16-degree applies to Chinese National Standard (CNS) Λ4 specification (210X297 mm) ^ --- installation ------ order ------- line (please read the notes on the back before filling in the transcript (Pages) A? B7 to describe the invention (14 6) by appropriate chemical or reactive ion etching to form and etch the red phosphor 21 from one third of the platform. 7) The green phosphor 22 is removed from the second third of the high platform by appropriate chemical or reactive ion etching molding and etching. 8) Deposit transparent conductive materials, such as ιτο, to make square contacts 3 5 on top of the ancient platform. 9) Deposit metal (not shown) and shape the strip contact U 0 to form a known contact metal row. This molding can be accomplished by, for example, shadow masking, lift off (llft_off), or gas reactive ion etching such as A1. 10) Deposit an isolation dielectric 25, such as SiNx. The device looks like Figure 4C after this step. 11) The window is etched in the isolation dielectric by reactive ions or wet etching to obtain the contact β of the blue OLED 20 12) The blue LED layer 20 is deposited on all objects. Layer 20 may be a SH or DH structure as previously explained. b) Deposit metal overlays 26M and 261 on all objects, and arrange metal bars

The shape of the "contact" and the five kinds of reflection preparations 4 7 are formed on the side of the high platform, as shown in Figure 4 D. Although the methods listed above can be used to manufacture the specific example shown in Figure 2A, other method steps are also It is feasible. For example, for the same purpose, the substrate 3 7 can be directly etched instead of being deposited and etched 19 to form the bottom of each device 9 4 ^ · 27 and 28, thus eliminating the need for the layer 19 β Another example is Alignment shade can be used to deposit the phosphor and the OLED layer in the pre-etching ------------ ^ --- --- i L__ (please read the weeping matter on the back before filling this page),- ° Staff of the Central Bureau of Standards of the Ministry of Economic Affairs, China, Cooperative cooperatives, M specifications (2 丨 〇χ) 9? Gongchu A7 B7 V. Description of the invention (15 engraved layer 19 or pre-etched substrate 3 7. (please first (Read the notes on the back and fill in this page again.) The specific example of the present invention shown in Figure 2B will now be used to explain the method of manufacturing an inverted multicolor LED on a common substrate 51. This same method can be used to form the substrate shown in Figure 2C. The specific example shown is in addition to using a patterned substrate 60 instead of a flat substrate 5 1 having a dielectric region 50 thereon. It is illustrated in Figure 5 A-5E 'It is not intended to be scaled. The following steps can be used to achieve the specific example shown in Figure 2B: 1) A dielectric coating 50 is deposited on a substrate 51, and this substrate The material 51 may be a metal 'δ' plastic layer, or other suitable substrate material. The layer should withstand selective etching, and may be, for example, SiOx, SiNx, polyimide, or Teflon. 2 ) The etched dielectric coating leaves area 50 so that a flat-bottomed cavity is formed in between. • 0 Deposits metal overlay 56 on all objects and shapes the metal to create a high-profile reflector and a row of metal strip contacts. 4) Deposit an isolation layer 53, such as SiCb. After this step, the device looks as shown in Figure 5 A. 5) A window is opened in the isolation coating for blue OLED 20 contacts. Economy 6) Deposition of blue 0LED layer 20 on all objects. Layer 20 can be a DH structure or a DH structure as described in the specific example shown previously in FIG. 2A, but Inverted in layers. 7) Deposit transparent ITO contacts 52. 8) Form the transparent ITO 52 into a shape to make a strip-shaped contact. After 9) depositing a layer of dielectric material 55, such as Si〇x. In this step, the paper loading process of the present -18 _ scale appropriate financial family material (CNS ΤΛ4 now grid (210X297,

Explanation of the invention (16) Economy. The print of the cooperative of cooperatives of employees of Deng Central Standards Bureau looks as shown in Figure 5B. 1) A few layers of red phosphor layer 21 are obtained, resulting in the shape shown in FIG. 5C. It is etched and etched to remove the red phosphor 21 one-third of the way from the high platform. 12) The green phosphor layer 22 is also deposited, and the shape shown in FIG. 5D is obtained. 13) Forming and engraving to remove the green phosphor 22 from the second three + two of the high platform to obtain the form shown in FIG. 5E. Although Figures 2A, 2B, and 2C are for multi-color display, the high and inverted forms of these figures can also be applied to monochrome display, where each pixel includes only single-color single-high or inverted High platform structure. In a third specific example of the present invention, the blue, green and red OLEDs are arranged in a stacked configuration as shown in FIG. 2D. This stacking configuration describes U.S. application 08 / 54,674 in the joint application filed on December 13, 1994, and PCT International Application Publication No. WO 96/19792, filed on December 6, 1995. The disclosures are incorporated herein by reference. The present invention utilizes this stacked configuration in combination with a high platform structure to minimize guided waves and maximize efficiency as previously discussed. In the specific example shown in FIG. 2D, blue 20, green 1 10, and red 11 1 0 LEDs are stacked on top of each other, and each OLED is separated from each other by a transparent conductive layer 26 to make each device acceptable Individual bias potentials can be emitted through the stack. Each OLED 20, 110 and 111 may be of the SH or DH type as previously explained. As shown in FIG. 2D, the stacked configurations of OLEDs 20, 110, and 1Π are set to conductive

The I layer II2, the dielectric layer 19, and the transparent substrate 37 are provided. Each conductive layer 26 includes a metal layer with a low working function (preferably < 4 eV). 19 The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210x297mm t) (Please read the precautions on the back before filling in the tips page)

Printed by the Central Laboratories of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives ^ A7 B7 V. Description of the Invention (17) A-26M, such as Mg, Mg / Ag, & U / A1, and an additional conductive layer 261 suitable for forming electrical contacts . Of course, the conductive layer between OLED 20, 110, and ^, and between the substrate 37 and the OLED 20 must be substantially transparent. However, the conductive layer% on the LED iu at the top of the stack # need not be transparent, but is more reflective. A joint 26T is formed on the metal layer% to make an electrical connection thereto, and it may be made of in, pt, Au, eight, and combinations thereof, or any suitable material known in the art. The stacking form 100 may include a low-loss, high-reflectivity dielectric material between the conductive layer 112 and the dielectric layer 19 as needed, such as a layer% of Ding 102. The layer 36 is particularly preferable when the conductive layer 112 is made of a material of high loss such that light from the oled layers 20, 110, and ln can be easily guided into the wave and absorbed by the conductive layer ip. The layer 36 substantially eliminates the guided wave in ιτ〇 and the light emitted from OLED 20, 110 and η is now substantially transmitted through layer 36. In addition, the 'layer 36 may have inclined sidewalls to reflect any guided light directed toward the substrate 37. The fabrication of OLEDs like ye 100, for example, is done by shadowing or dry etching. For example, stacked OLED pixels 100 are prepared by the following steps, as shown schematically in Figures 6A-6D: 5-10 micron transparent dielectric layer 19 is deposited on a transparent substrate 37. The dielectric layer 19 should have a reflectance lower than or equal to the substrate 37. The layer 19 may be, for example, SiOx or Teflon. 2) Deposit a layer of transparent conductive material 112, such as IT0. After this step, the device looks like circle 6A. J) etching to form a mesa structure, as shown in FIG. 6B. ---- i ^ L ------ 1T ------ ^ (Please read the precautions on the back before filling this page)

Printed by the Central Bureau of Standards of the Ministry of Economic Affairs and Consumer Cooperatives A7 B7 V. Description of the invention (18) 4) A blue OLED layer 20 is deposited. Layer 20 may be a SH or DH structure as previously explained. 5) Deposit conductive layers 26M and 261. 6) A green OLED layer 110 is deposited. The layer 110 may be a SH or DH structure as previously explained. 7) Deposit conductive layers 26M and 261. 8) Deposit the red OLED layer 1 1 1. Layers 11 to 11 may be SH or DH structures as previously explained. 9) Deposit conductive layers 26M and 261. After this step, the device looks like Figure 6C. 10) Reflectors 47 are deposited on the side walls of the platform, and connectors 26T are deposited on the layers 261. The final device looks like Figure 6D. Although FIG. 2D shows the use of stacked OLEDs in combination with a high platform structure, the present invention also considers the use of stacked OLEDs in an inverted high platform structure. This inverted platform structure is deposited by, for example, depositing the required OLED and conductive layer on, for example, a substrate with an etched dielectric layer thereon or an etched layer as described previously for the specific examples shown in FIGS. 2B and 2C, respectively. It is formed on a substrate of a recess or a hole. In order to complete the reversal of the high-level, stacked OLED device, the layering sequence previously described for the specific example shown in FIG. 2D should be reversed. Other embodiments of the present invention are designed to concentrate light to maximize efficiency and for high brightness applications. Such light-emitting articles each include a transparent substrate, a light reflecting layer on the substrate, a light reflecting structure in the form of a wave-guiding layer on the reflecting layer, and at least one OLED on the wave-guiding layer, each OLED for a predetermined color The light emitting layer has at least one opening in the light reflection layer. Since OLED -21-; --- -1 Pack I -------- Order ------ Line (Please read the precautions on the back before filling this page) This paper size applies to Chinese National Standards (CNS ) A4 specification (210 '乂 297mm) A7 A7 Central Government Bureau of the Ministry of Economic Affairs, W3C Industrial and Consumer Cooperatives, India Ben V. Invention Description (19) —- ~ The emitted light is reflected by the side walls of the guided wave layer and the light reflection layer. Therefore, it is guided through the opening in the light reflection layer to emit light through the substrate. Therefore, the light generated by the OLED of a relatively large length is concentrated into a relatively small light emitting area. The result is a light emitting device with high brightness and high resolution. A fourth specific example of the present invention is shown in Figs. 7A and 7B, which are a side view and a top view, respectively. The light emitting device 1000 includes a base material oo, a light reflection layer 1110, a wave guide layer 1120, and an OLED layer 1130. There is at least one opening 115 in the light-reflecting property 30 to allow light emitted from the OLED layer 1130 to pass through. In this specific example, the wave-guiding layer 1120 has a top surface, a bottom surface, and at least three sides. One of the inverted surfaces 21-6 of the wave-guiding layer 1120 is formed below 90 with respect to the substrate 1100. Angle to about 45. Better. The remaining side of the wave guide layer 1 120 is substantially perpendicular to the substrate 1 100. The reflection 1 14 0 is not necessary on the side 2 16 0 and is preferably on the remaining side of the wave guide layer i 丨 2 〇 . In the specific example shown in Figs. 7A and 7B, the light emitted from the OLED layer J η〇 is guided in the wave guide layer 1120, where it is reflected by the light reflection layer lu0 and the side of the wave guide layer 1 120, So that it is guided through the opening U50. The result is a concentrated beam passing through the opening 1150 and the substrate 1100. Although the specific example shown in FIGS. 7A and 7B is described as directing light through the substrate 1100, the present invention also includes a " reverse " form such as that shown in FIG. 7C. In this form, the device is disposed in a patterned substrate having a recess therein so that the light is guided in a direction away from the substrate. If the substrate in this device is non-reflective, a "layer of reflective material 2 1 70" should be included between the OLED 1130 and the substrate. The depth of the pits in the pattern substrate can be quite shallow ___-22 · The size of the sheet is applicable in the S country standard (CNS) A4 specification (210 × 297 < ^ ~ Ρ ~~ --- ------ …… --- Installed ------ Order ------ line (please read the precautions on the back before filling out this page) A7 B7 V. Description of Invention (2) Staff of Central Bureau of Standards, Ministry of Economic Affairs Consumption cooperation Du printed, about 1000-3000 angstroms, and as wide as necessary. For example, the pattern base 00U00 is made of a cavity = s formed by a standard directional etching method. The fifth of the present invention A specific example is shown in Figs. 8A and 8B. The light emitting device 1010 includes a substrate 1100, a light reflecting layer 1110, a wave guide layer 112, and an OLED layer 1. At least two side faces of the wave guide layer i 12o are opposite to the substrate. The angle is less than 9G. The angle is about 3G. It is better, and the other sides are perpendicular to the substrate. The light reflecting layer 1110 has a wave guide layer 112 of which is disposed at 90 degrees relative to the substrate. The opening below the side surface. As shown in Figure μ, the light emitted from the OLED layer 113〇 is guided in the wave guide layer 1120, where it is reflected to open the sides of the light reflection layer 1110 and the wave guide layer 1120. It is guided through the opening 1150. The light emitting device 1010 may include a reflector 1140 as needed to help reflect the light emitted from the U30 layer. The light coming out of the opening 1150 of the device 1010 is focused at a certain focal point 12 〇〇. The substrate 1100 is generally made of a transparent material, such as glass, quartz, sapphire, or plastic. The reflector 1140 is, for example, a metal mirror or a multilayer dielectric stack, and the latter is preferred. If a metal mirror is used, the reflection is The device 1140 is made of any suitable metal or alloy. It is preferably made of aluminum, silver, magnesium, alloys, and combinations thereof. If a multilayer dielectric stack is used, the reflective layer 1140 is made of any dielectric material with different reflectivity. For example, T10jsi02, which is known in the art, is used to make the light-transmitting layer 1 1 10, which is preferably made of a multilayer reflective dielectric stack that is highly reflective. Requirement: Reflector 1140, the need depends on the use as a wave-guiding layer mo 疋 This material is any suitable transparent dielectric material such as

.II > ---- Γ J — 装 II (Please read the notes on the back before filling out this page y · • III.. H- n ---- 'n Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs System A7 ____________ V. Description of the invention (21) 'Permanent imine or Teflon. The best feeling is the total reflection of light impinging on the corner soil of the wave guide layer 1120, which causes total internal reflection. However, such as Because the material used as the wave guide layer 丨 20 cannot be obtained, the reflector 1 140 is required. For example, the material used for the wave guide layer and the material (or environment) surrounding the wave guide layer will have ~ and n] characteristic reflectivity. It is shown in Fig. 9 and the critical angle of the minimum angle at which Ashikari will generate total internal reflection is related to n2 and ~ according to the equation sm (Θc) = (ni / n2), where η < η2 Therefore, it can be seen that when the reflectance n2 of the wave-guiding layer 1120 increases, 0 e decreases β for 疋 値 η 丨 below ~. Therefore, when the reflectivity of the wave-guiding layer 12o is very large, the surrounding material (or Environment), Θ c is minimized so that intrinsic reflection is more likely to occur. In this case, it may not be necessary Reflector 4o. Conversely, when h is similar to n !, it becomes the largest, so that internal reflection becomes less likely ', so reflector 114 may be needed. Although reflector 1140 is shown in the figure It is a flat and straight element, but it can have different shapes. For example, the shape of the reflector 1140 can be curved or parabolic to have a focusing effect on the shock beam. In order to minimize the intrinsic loss, the waveguide layer 〖丨 2 〇 should have a better reflectance than the conductive layer 15 00. In addition, the wave guide layer 丨 12 should have a higher reflectance than the substrate to avoid light from the light guide layer 1120 leaking through the light reflecting layer 111 and entering the base 1100. In addition, the light-emitting device of the present invention may include a low-loss, high-reflectivity dielectric material, such as a layer 117, under the conductive layer 1500. When the conductive layer 丨 500 is high-loss The material is made of IT◦, so that it can absorb the light emitted from OLED, layer 1130, the layer is particularly good. The reflectivity of Ti0 2 and ITO are about 2.6 and 2.2, respectively. Layer 11 70 -24- This paper is suitable for standard China National Standard (CNS) Λ4 Specification 77 ^ x297 Gongchu) ------, ---- i ^ L ------ ΐτ ------ ^ (Please read the notes on the back before filling in ft? This page) A7 A7 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ) Therefore, it is necessary to eliminate the guided wave and absorption in ITO. Although the reflectance of layer H7〇 should be greater than that of layer 1500, it should be lower than the reflectance of wave-guiding layer 1120 so that the emitted light can easily pass from layer 1170 to layer i 120. In another attempt to reduce internal depletion, a layer of low-loss, local-reflective dielectric material can be placed at the opening as required, as an anti-reflection coating, to promote the optical self-guided layer 1120. Transported into substrate 1 100. The layer 119〇 may also be disposed under the substrate 1100, as shown in FIGS. 7A and 8A. The layer 1190 is, for example, Teflon. In any specific example of the present invention, the OLED layer 1 13 may be an OLED with a single or double heterogeneous structure as known in the art. For the sake of simplicity, the OLED used in the present invention is shown as a single layer in the drawings, even if the OLED is not a single-layer polymer as known in the art, each actually includes a plurality of sublayers. In addition, for the operation of the LED layer 3, several electrode layers are required, as shown in FIGS. 10A-10C. As shown in FIG. 10A, a metal layer with a low work function (preferably < 4 eV) is formed on top of the OLED layer 1130. Suitable choices of metal layers include Mg, Mg / Ag, and Li / Al. The metal layer 1510 is provided as a contact material of the OLED layer 11j0 and a reflective material that reflects the impact beam. Deposited on top of the metal layer 1510 is another conductive layer 1520 suitable for forming electrical contact. The conductive layer 1520 is made of, for example, IT0 'Al, Ag, or Au. When a voltage is applied between the conductive layer 15 and the conductive layer 1520, light is emitted from the OLED 1130, thereby causing the EL of the OLED layer 1130 to emit light. Optionally, a layer of phosphor 1160 may be included to convert the light energy emitted from the OLED light emitting layer to a desired color in a low direction. The specific singularity shown in Figure 10 A will be ______- 25- This paper size applies the Chinese National Standard (CNS) Λ4 specification (210 X297) while taking advantage of ------ ------, 1τ- ----- ^ (Read the precautions on the back before filling out this page) Seal of the Consumers Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 絜 Λ7 ------- _ B7 Five 'Invention Description (23) Monochrome Glow.

Alternatively, to facilitate multi-color applications, the OLED layer 1130 includes

The blue OLED 1600, the green OLED 1610, and the red OLED 1620 are shown. Each blue, green, and red OLED can be individually addressed to independently emit blue, green, and red light. Another way is to set the blue, green and red OLEDs in a stacked configuration as shown in Fig. 10c. This stack configuration is described in US Application 08 / 354,674 in the joint application filed on December 13, 994, and PCT International Application Publication No. WO 96/19792, filed on December 6, 1995. Its disclosure is incorporated herein by reference. In the specific example shown in FIG. 10c, the blue 1600, green 1610, and red 1620 OLEDs are stacked on top of each other. Each OLED is separated from each other by layers 1 5 10 and 1520, so that each device Individual bias potentials can be accepted to emit light through the stack. In this specific example, the metal layer 1520 disposed between the OLED materials (eg, between layers 1 600 and 16 10, and between layers 1010 and 1620) is thin enough to become transparent, and in red The metal layer 1520 at the top of the OLED 1 620, which is the topmost conductive layer in the device, is thick enough to reflect the impact beam. Each OleD 1600, 1610, and 1620 may be of the Sh or DH type as previously explained. As shown in FIG. 10C, the stacked configurations of the OLEDs 1600, 1610, and 1620 are disposed on the conductive layer 1500. Any of the methods and materials listed above are well known in the art. For example, the preferred method of depositing the OLED layer is by thermal evaporation or spin coating; the preferred method of depositing the metal layer is by thermal or electron beam evaporation or sputtering: the preferred method of depositing ITO is by E-beam evaporation or sputtering; deposited phosphorus-26- This paper size applies to China National Standard (CNS) A4 specification (210X 297 cm) < --------- ΐτ ------. ^ (Please read the precautions on the back before filling out this page)-Printing of A7 B7 by the Consumer Cooperatives of the Ministry of Economic Affairs of the Ministry of Economic Affairs of the People's Republic of China V. Description of the Invention (24) The best method for the light body layer is by thermal evaporation or sputtering And a preferred method of depositing the dielectric is to promote chemical vapor deposition or electron beam evaporation by plasma. A significant advantage of the specific embodiment of the invention using the light reflecting layer 11 1 0 is that the light generated by a relatively large OLED is concentrated into a relatively small light emitting area. The result is a light emitting device with high brightness and high resolution. As the length L of each device of the present invention is increased, it is expected that the efficiency of the device will increase to reach a certain optimal length (Lopt), the loss in the device above this length will become significant, and the efficiency will decrease accordingly. This phenomenon is illustrated in FIG. 11. Thus, the specific example shown in FIG. 8 having two openings U50 in the light reflecting layer 1110 and converging the light beam to the focal point 1 200 is generally twice as bright as the specific example shown in FIG. 7. The specific example shown in Fig. 8 can therefore be one-half the length of the specific example shown in Fig. 7, but still have the same resulting light intensity. The high brightness 1 light obtained from specific examples of the present invention utilizing the light reflecting layer 1 1 10 enables these devices to be effectively used for dry photocopying, copying, printing and display applications and any other such applications that require high brightness, monochrome or multicolor light emission Its application. Depending on the application, the specific examples shown and described can be used alone or in a large number of pixels. For example, in the case where the present invention is used to form a flat line following display device including a plurality of picture elements, each light emitting device as described herein may represent an individual picture element or a part thereof. Blue light can be used for any specific example of the invention. The metal double-ligand complex of LED has the chemical formula of MDL42, where ^ is a trivalent metal and a lanthanide element selected from Group 3-Π of the periodic table. Preferred metal ions are Al3, G〆, In'W3. D is a double-ligand ligand, such as 2 such as methyl ketone, 2_zonabityl snapper, and 2_ (o-benzophenone. Compared to ___-____ -2Ί-(cNiTX ^ i ~ f2-10x297 ^ y (Please read the notes on the back before filling this page)

V. Description of the invention (25) A7 B7 The L group of the India Consumer Goods Cooperative Consumer Cooperative of the Ministry of Economic Affairs of the People's Republic of China includes acetylase propionate and a compound of the formula 0r3r, where R3 is selected from the group consisting of Si and c 'and r Is selected from the group consisting of hydrogen, substituted and unsubstituted alkyl, aryl and heterocyclic groups; 3,% di- (third butyl) phenol; 2,6-di- (second butyl) Sb ' 2,6-di- (third butyl) formaldehyde test; and {^ 28? 22. For example, 'the wavelength obtained by measuring the photon excitation light in (pyridylmethylfluorenone) bis [2,6_di_ (third butyl) benzene oxidation] is 420 nm. The cresol derivative of this compound was also measured to be 42 nm. (Pyridylmethyl methyl ketone) bis (OsiPh3) aluminum and (4-methoxy-pyridylmethyl methyl ketone) bis (acetamidineacetone) 铳 each measured 433 nm, and [2- (o-phenoxy Yl) pyridine] bis [2,6-di- (third butyl) phenoxy] aluminum was measured to be 450 nm. Examples of green 0LED luminescent materials include tin (iv) metal complexes, such as those having the chemical formula SnL1〗 L22, where L1 is selected from salicylaldehyde, salicylic acid, or hydroquinone salts (eg, 8-hydroxyquinoline) . l2 may be substituted or unsubstituted technical, aryl and heterocyclic groups. For example, when L1 is a hydrogen salt and L2 is a phenyl group, the tin (iv) metal complex will have an emission wavelength of 504 nm. Examples of red 0LED luminescent materials include the divalent metal cis-butene difluorene nitrile dithiol (" mnt ") complexes, such as those described by C. E. Johnson et al. In Luminescence Record (I), Qian ( I), and Ming (Π) dithiolate complex (Luminescent Iridium (I), Rhodium (I), and Platinum (II) Dithiolate Complexes " > 105 American Chemical Society Journal no.ljrna1 〇f the American Chemical Society) 1 795Π983). For example, mnt [Pt (Pph3) 2] emits light with a characteristic wavelength of 652 nm. 1 Other OL materials are known in the art (see, for example, U.S. Patent No. 5,294,870 to Tang et al., Entitled " Organic Electrically Excited Light Multicolor Shadow-28- This paper is based on Chinese standards (CNTS) ) Λ4 specification (2IOX297 mm) H --- * — ^ m —J * — luv n-J *-^ 1 I—-= An (Read the precautions on the back before filling this page)

* 1T line ---- • II 1 I f — ·. ·-.1. ». A7 B7 V. Description of Invention (26) Organic Electroluminescent Multicolor Image Display Device ": Hosokawa et al. & Quot Highly efficient blue electroluminescence from a distyrylarylene emitting layer with a new dopant from a stilbene-based arylide emitting layer with a new dopant 67 Applied Physics Letters 3853-55 (December 1995); Adachi et al., "Blue light-emitting organic electroluminescent devices" " 56 Applied Physics Letter f799-80 1 (February 1990); Burrows Et al., "Color-Tunable Organic Light Emitting Devices", 69 Applied Physics Letter 2959-61 (November 1996)). The full disclosure of these references is incorporated herein by reference. Diphenylethenyl arylidene derivatives', such as those described in Hosokawa et al., Are preferred compounds. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs " 1 ------ I---I- (if-n * i-.i-* ·! (Please read the precautions on the back before filling out this page) The red and green light-emitting fluorescent mediums intended for use in the present invention are well known in the art. U.S. Patent Nos. 4,769,292 and 5,294,870, the contents of which are incorporated herein by reference, are illustrative. These fluorescent dyes are soluble in polymers such as Among the parent polymers of methyl methacrylate, and many suitable dyes were originally developed for plastic lasers. Examples of red fluorescent dyes are 4_dicyanomethylene-4H-piran and 4_di Cyanomethylene_4 [1_thiopiperan. Examples of green fluorescent dyes include polymethine dyes such as cyanine, merocyanine and tri-, tetra-, and polynuclear cyanine and merocyanine, oxygen Alcohols (oxonols), hexoxanols (henuoxanoh), styryl, mestyrenyl, and cyanine. The I device of the present invention provides low cost, high resolution, and high brightness in any size.

A7 B7 V. Description of the invention (27) Or monochrome or? Colored flat display. This extends the scope of the invention to include displays as small as a few millimeters and as large as buildings. The image produced on the display can be a full color theme or description, with any resolution depending on the size of the individual LED. The device of the present invention is therefore suitable for extremely wide applications, including electronic displays, lasers, lighting devices, and display devices for advertising boards and signboards, computer monitors, telecommunications devices such as telephones, televisions, and large walls Screens, theater screens, and stadium screens, for example, ° The specific example of the invention that directs the emitted light away from the substrate is particularly useful for dry photocopying applications, as this specific example allows tight positioning to the printing paper without Use lenses. Those skilled in the art will recognize various modifications to the specific examples of the invention described and illustrated herein. These modifications are intended to be covered by the spirit and scope of the accompanying patentable scope. . 装 l · — (Please read the notes on the back before filling this page)

.1T Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs -30- This paper size applies to the China Garden Standard (CNS) Λ4 specification (210X 297 mm)

Claims (1)

A8 B8 C8 D8 VI. Patent application scope L—A kind of light-emitting article, which includes: · a substrate; a light reflecting structure provided in or on the substrate, the light reflecting structure is characterized by a top portion and a bottom portion Wherein the top portion is narrower than the bottom portion; and 'organic light emission provided in or on the light reflection structure, wherein the light reflection structure will guide light emitted from the light emitting device to the light reflection The bottom part of the structure β .; [Zil a 'according to item i of the scope of patent application, wherein the substrate is transparent; and the light reflecting structure is disposed on the substrate, and the bottom of the light reflecting structure is Shao Shao It is in close proximity to the substrate, so that light emitted by the organic light emitting device is directed toward the substrate. 1 _ The light-emitting article according to item 2 of Shen Zhiqing's patent scope, wherein the light reflecting structure includes a side wall that intersects the bottom portion at an acute angle. 4_ The luminous article according to item 3 of the patent application park, which further includes a reflector on the side wall. ~ · The light-emitting article according to item 2 of the scope of patent application, wherein the high-light reflecting structure includes a plurality of side walls; and each side wall intersects with the bottom portion to form an acute angle. 6. The luminous article according to item 5 of the scope of patent application, which further includes at least one of the plurality of side walls and a reflector. • The light-emitting article according to item 5 of the scope of patent application, in which the light-reflecting junction ------------ ^ install ^ ------ order ------- line (please first (Notes on the back of the Ge University Read this page before filling out this page.) 'Scope of patent application A8 BS C8 D8 The Ministry of Foreign Affairs ordered the sample-probable clerk, the consumer cooperation, and the printing system was a high-level structure. The light-emitting article according to item 7 of the patent application park, wherein: the salty organic light-emitting device is arranged on the high-level structure; and the organic light-emitting device includes: an anode on the high-level structure; Layer, wherein the first organic layer is a hole transport layer; and a second organic layer on the first organic layer, wherein the second organic layer is an emission and electron transport layer; and Cathode on organic layer. The light-emitting article according to item 7 of the scope of patent application, wherein: the organic light-emitting device is disposed on the elevated structure; and the organic light-emitting device includes: an anode on the elevated structure; the first organic layer on Tongyang as above , Where the first organic layer is a hole transport layer; a second organic layer on the first organic layer, wherein the second organic layer is an emission layer; on the second organic layer A third organic layer, wherein the third organic layer is an electron transporting layer; and a cathode clasped on the third organic layer. 〇. According to item 7 of the scope of patent application, the light-emitting article 1 device is installed on the platform structure. 1L according to item 7 of the scope of the patent application 9 of the organic light-emitting, which organic light-emitting -------- l · install l · ----- order ------ line (please Read the precautions on the back before you fill in this purchase) This paper size 1 32-M size (210X297 public holiday) ABCD Staff Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Seal 6. The scope of the patent application device is set in the platform structure. 12. The luminous article according to the scope of the patent application, wherein: the luminous article is a multi-color display including a plurality of pixels, each of which includes three of the light reflecting structures; the first of the light reflecting structures is Blue light emitting device, the second light reflecting structure is a green light emitter, and the third light reflecting structure is a red light emitter. (2) The light-emitting article according to item 12 of the scope of patent application, wherein the organic light-emitting garment emits blue light. 14. The light-emitting article according to item 13 of the patent application scope, wherein the second one of the light reflecting structure includes a green low-direction variable-frequency phosphor layer that converts substantially all blue light emitted from the organic light-emitting device into green light. 15. The light-emitting article according to item π of the patent application scope, wherein the third of the light reflection structure includes a red low-direction variable-frequency phosphor layer that converts substantially all blue light emitted from the organic light-emitting device / to red light. 16. The light-emitting article according to item 1 of the patent application scope, further comprising at least one additional organic light-emitting device. 17. The light-emitting article according to item 16 of the scope of patent application, wherein the organic light-emitting device and the at least one additional organic light-emitting device are arranged in a stacked configuration. 18. The light-emitting article according to item I of the patent application scope, wherein the organic light-emitting device and the at least one additional organic light-emitting device are independently addressable. 19 '. The light-emitting article according to item 2 of the scope of patent application, wherein: r the light reflecting structure includes at least three side walls; and one of the side walls forms an acute angle with respect to the substrate, and the remaining -33- --- -------- • 丨 | 丨 -----, 玎 ------ ^ (Please read the notes on the back before filling this page) I * Public VI. Scope of patent application Printed by the Ministry of Light Economy and China's Fulu Bureau, the consumer cooperation, and printed by the agency. The side wall is substantially perpendicular to the substrate. • The light-emitting article according to item 19 of the scope of patent application, which further includes a light-reflective layer on the substrate, which has at least one opening in the light-reflective layer, wherein: the light emitted from the organic light-emitting device is guided through The at least one opening is configured to emit light through the substrate. 21. The light-emitting article according to claim 20 of the application, wherein the light reflection layer has an opening directly below the side of the light reflection structure forming an acute angle with respect to the substrate. -The light-emitting article according to item 21 of the patent application scope, wherein the acute angle is approximately 45 c. The light-emitting article according to item 19 of the patent application scope, wherein the M light reflecting structure includes at least three side walls; and at least two sides The multiple faces of the wall form an acute angle with respect to the substrate, and) the soil; any remaining faces of the two sides are substantially perpendicular to the substrate. ~ 'The luminous article according to item 23 of the scope of the patent application, one of which has a plurality of openings in the light reflecting layer, each of the openings being located in the at least 2 side walls, each of the side walls forming an acute angle with respect to the substrate下方 Right below. 25. The light-emitting article according to item 24 of the Chinese Patent Patent Park, wherein the light emitted through the plurality of openings converges to a common focus. ′ The light-emitting article according to item 1 of the scope of patent application, wherein the top portion of the light-reflecting structure is close to the substrate, so that light emitted from the organic light-emitting device is guided away from the substrate. ) 7 ~. The light-emitting article according to item% of the applied patent garden, wherein the light reflecting structure is a recess in the top surface of the substrate; and the 34-Α4 ^ · (210X297 mm) i binding- ----- line (please read the notes on the back first and fill in this page) Each organic layer 28: = Γ The bottom part is the same as the top surface of the substrate. The light-emitting article on page 271 of the patent application patent garden, wherein the factory's organic light-emitting device is disposed in the recess; and the The organic light-emitting device includes: a cathode on the substrate; the first-g layer on the cathode is an emitting and electron-transporting layer; and the second financial layer on the first-caucalypium layer, the organic layers are The hole transport layer; and the anode of Bian Yi on the second organic layer. 29. The light-emitting article according to item 27 of the scope of patent application, wherein: "• HAI organic light-emitting I is disposed in the cavity; And the organic light emitting device includes: a cathode on the substrate; a first organic layer on the cathode, wherein the first organic drawer is an electron transport layer; " on the first organic layer A second organic layer, wherein the second organic layer is an emitting layer; a third organic layer on the second organic layer, wherein the third organic layer is a hole transporting layer; and The anode on the third organic layer. The light-emitting article of the 26th patent scope of the patent, further includes at least one cavity defining structure on the substrate., The light-emitting article of the 30th patent scope is claimed, wherein the light reflection junction is -35. -This paper size is applicable to Chinese gj standard (CNS) secret grade (2 ladies and 297 public love ---- r-" i equipment -------- order ------ line (please first (Read the notes on the back and fill in this page) Printed by the Consumer Cooperatives of the Central Government Bureau of the Ministry of Light Industry ~~~ --- The series is a cavity formed by the at least one cavity defining structure. 4) The luminous article under the scope of application for patent No. 27, wherein the light reflection junction 1 structure has an inverted high platform structure with multiple sides. The light-emitting article according to item 32 of the application, wherein the large end portion of the light reflecting structure and the side surface form about 135. Angle. ----------- Come to install-(Please read the precautions on the back before filling out this page) Order ------ Online economy. Printed by 消费 中 夬 standard bureau staff consumer cooperatives -36 -This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)